bay area chosen to honor nelson mandela but buster -- the of mandela stands with others and city leaders renamed cypress street. and a small high school in oakland is named for mandela. now, we have collected memorable pictures. there are many. you can see them on our web site abc7 news.com and a reminder world news will be an hour tonight the extra half hour on the passing of nelson mandela airing following this newscast. stay tuned for that. >> right now we have breaking news in the east bay a possible chlorine leak in pittsburgh. the health department issued a hazardous materials warning for the area possibly because of a chlorine leak. we're waiting and want to let you know officials say water has gotten into a chlorine tank and that could cause a dangerous gas leak this, is just never a good situation. we do have someone on the phone with us right now. this is cheryl jennings. can you tell us what is going on? >> yes. there is water into the chlorine. they make a corrosive atmosphere. does, it's affecting people about w.preexisting lung conditions. so we're just putting a health adv